/*!	 valuenode_exp.h
**	 Header file for implementation of the "Exponential" valuenode conversion.
**
**	Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
**  Copyright (c) 2011 Carlos López
**
**	This package is free software; you can redistribute it and/or
**	modify it under the terms of the GNU General Public License as
**	published by the Free Software Foundation; either version 2 of
**	the License, or (at your option) any later version.
**
**	This package is distributed in the hope that it will be useful,
**	but WITHOUT ANY WARRANTY; without even the implied warranty of
**	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
**	General Public License for more details.
**
*/

#ifndef __SYNFIG_VALUENODE_EXP_H
#define __SYNFIG_VALUENODE_EXP_H

#include <synfig/valuenode.h>

namespace synfig
{

class ValueNode_Exp : public LinkableValueNode
{
    ValueNode::RHandle exp_;
    ValueNode::RHandle scale_;

    ValueNode_Exp(const ValueBase &value);

public:

    typedef etl::handle<ValueNode_Exp> Handle;
    typedef etl::handle<const ValueNode_Exp> ConstHandle;

    virtual ValueBase operator()(Time t)const;

    virtual ~ValueNode_Exp();

    virtual String get_name()const;
    virtual String get_local_name()const;

    virtual ValueNode::LooseHandle get_link_vfunc(int i)const;

protected:
    LinkableValueNode* create_new()const;
    virtual bool set_link_vfunc(int i, ValueNode::Handle x);

public:
    using synfig::LinkableValueNode::get_link_vfunc;

    using synfig::LinkableValueNode::set_link_vfunc;
    static bool check_type(Type &type);
    static ValueNode_Exp* create(const ValueBase &x);
    virtual Vocab get_children_vocab_vfunc()const;
}; // END of class ValueNode_Exp

}; // END of namespace synfig

#endif